Valid and reliable assessment of students' knowledge and skills is integral to dental education. However, most faculty members receive no formal training on student assessment techniques. The aim of this study was to quantify the value of a professional development program designed to improve the test item-writing skills of dental faculty members. A quasi-experimental (pretest, intervention, posttest) study was conducted with faculty members in the dental school of Majmaah University, Saudi decreased, those with high discrimination increased, and the proportion of questions with more than two non-functional distractors were reduced. These results provide evidence of improved test item quality following implementation of a long-term faculty its value for dental schools.Saleem Shaikh is Lecturer,